Re: delaying forced sleep after initial 30 seconds delay
Re: delaying forced sleep after initial 30 seconds delay
- Subject: Re: delaying forced sleep after initial 30 seconds delay
- From: Jens Alfke <email@hidden>
- Date: Fri, 03 May 2013 11:50:30 -0700
On May 2, 2013, at 9:56 PM, Kyle Sluder <email@hidden> wrote:
> This shouldn't happen. It's a bad thing when it does. So the system is
> designed to prevent you from causing it to happen.
>
> Please don't try to give your users a "Ruin My Hardware" checkbox.
The question is whether running the CPU while the lid is shut will overheat the system. Overheating will very definitely damage the hardware — in particular, heat-related GPU failures have been very common on some MBP models. (The temperature sensor is supposed to cut power before this point, but apparently it doesn't always.)
I know that older Mac laptops could run with the lid closed, so that you could use them with an external display without using the internal screen. However, those laptops had more ventilation. With the current one-piece aluminum chassis the only ventilation is through the vents parallel to the screen hinge, and with the lid shut it seems like those would be mostly blocked.
Once or twice I've had a unibody Macbook Pro fail to go to sleep when I tucked it into my backpack, and it's come out quite hot, as in the bottom plate was almost painful to touch. That definitely does not seem good for it.
—Jens
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